Board-to-board connector assembly

Abstract

A board-to-board connector assembly includes a receptacle and a plug. The receptacle has a receptacle housing. A plurality of first terminals are configured in the receptacle housing. A first shielding shell is mounted to two opposite ends of the receptacle housing. A second shielding shell is mounted to two opposite sides of the receptacle housing for contacting with the first shielding shell. The plug has a plug housing received in the receptacle housing. A plurality of second terminals are configured in the plug housing. A third shielding shell is mounted to the plug housing and contacts with the second shielding shell.

1. A board-to-board connector assembly adapted for electrically interconnecting a female and a male printed circuit boards, comprising:
 a receptacle adapted to be mounted to the female printed circuit board, the receptacle having:
 a receptacle housing with a plurality of first cavities defined therein, the receptacle housing having a first base, two first sidewalls protruding upward from two opposite ends of the first base, two second sidewalls protruding upward from two opposite sides of the first base, and a first recess defined among the first and the second sidewalls and communicating with the first cavities, 
 a plurality of first terminals received in the respective first cavities, 
 a first shielding shell mounted to the first sidewall and adapted to be soldered with the female printed circuit board, and 
 a second shielding shell mounted to the second sidewall and contacting with the first shielding shell, wherein the first and the second shielding shells are configured to surround the first terminals; and 
 
 a plug adapted to be mounted to the male printed circuit board, the plug having:
 a plug housing received in the first recess of the receptacle housing, the plug housing defining a plurality of second cavities, 
 a plurality of second terminals received in the respective second cavities and contacting with the corresponding first terminals, and 
 a third shielding shell mounted to the plug housing and adapted to be soldered with the male printed circuit board, the third shielding shell contacting with the second shielding shell. 
 
 
   
   
     2. The board-to-board connector assembly as claimed in  claim 1 , wherein the receptacle housing further has four L-shaped supporting portions respectively encircling four corners of the receptacle housing, a channel is defined between the supporting portion and the corresponding corner for securing the first and the second shielding shells. 
   
   
     3. The board-to-board connector assembly as claimed in  claim 2 , wherein the first shielding shell has a base plate extending transversely, the middle of the bottom of the base plate bends toward one side to form a first soldering section, two ends of the base plate bend toward the other side opposite the first soldering section to form a pair of arms, a first contact section is defined on the arm, the base plate and the arms are received in the corresponding channel, the first soldering section is received between two corresponding ends of the corresponding supporting portions for being soldered to the female printed circuit board, the first contact section contacts with the second shielding shell. 
   
   
     4. The board-to-board connector assembly as claimed in  claim 3 , wherein the bottom of the base plate extends downward to form two fixing sections located near the first soldering section respectively, and the supporting portions each defines a first hole communicating with the channel for receiving the corresponding fixing section. 
   
   
     5. The board-to-board connector assembly as claimed in  claim 2 , wherein the second shielding shell has a bar plate extending longitudinally and shrouding the outside of the second sidewall, two ends of the bar plate bend inward and then extend sideward to form a pair of connecting sections received in the corresponding channels to contact with the first shielding shell, the top of the connecting section bends inward and then extends downward to form an elastic section stretching into the first recess of the receptacle housing, a second contact section protrudes from the elastic section to contact with the third shielding shell. 
   
   
     6. The board-to-board connector assembly as claimed in  claim 5 , wherein the bottom of the connecting section extends downward to form a flange, and the supporting portion defines a second hole communicating with the channel for receiving the flange. 
   
   
     7. The board-to-board connector assembly as claimed in  claim 1 , wherein each end of the opposite sides of the plug housing defines a locking slot extending therethrough and also defines a locking groove extending therethrough and communicating with both the corresponding locking slot and the outside. 
   
   
     8. The board-to-board connector assembly as claimed in  claim 7 , wherein the third shielding shell has a fixing plate extending longitudinally and received in the locking slot, a middle of a top of the fixing plate bends toward one side to form a second soldering section protruding outward through the locking groove for being soldered to the male printed circuit board, a middle of a bottom of the fixing plate bends toward the same side and then extends upward to form a third contact section received in the locking groove and protruding outward from the locking groove to contact with the corresponding second shielding shell. 
   
   
     9. The board-to-board connector assembly as claimed in  claim 1 , wherein a middle of the first base of the receptacle housing protrudes upward into the first recess to form a rib extending longwise, a middle of the plug housing concaves inward to form a second recess for receiving the rib, the second cavities communicate with the second recess. 
   
   
     10. The board-to-board connector assembly as claimed in  claim 9 , wherein two opposite sides of the rib define a plurality of perforations connecting with the respective first cavities and communicating with the first recess for receiving the first terminals. 
   
   
     11. The board-to-board connector assembly as claimed in  claim 1 , wherein the second sidewall defines a plurality of apertures extending therethrough and communicating with the respective first cavities for securing the first terminals. 
   
   
     12. A receptacle of a board-to-board connector assembly adapted for electrically interconnecting a printed circuit board, comprising:
 a receptacle housing with a plurality of first cavities defined therein, the receptacle housing having a first base, two first sidewalls protruding upward from two opposite ends of the first base, two second sidewalls protruding upward from two opposite sides of the first base, and a first recess defined among the first and the second sidewalls and communicating with the first cavities, the receptacle housing further having four L-shaped supporting portions respectively encircling four corners of the receptacle housing, a channel being defined between the supporting portion and the corresponding corner; 
 a plurality of first terminals received in the respective first cavities; 
 a first shielding shell having a base plate extending transversely, a middle of a bottom of the base plate bending toward one side to form a first soldering section for being soldered to the printed circuit board, two ends of the base plate bending toward the other side opposite the first soldering section to form a pair of arms, a first contact section being defined on the arm, the base plate and the arms being received in the corresponding channel; and 
 a second shielding shell having a bar plate extending longitudinally, the bar plate shrouding the outside of the second sidewall, two ends of the bar plate bending inward and then extending sideward to form a pair of connecting sections received in the corresponding channels to contact with the first contact section of the first shielding shell, a top of the connecting section bending downward to form an elastic section stretching into the first recess of the receptacle housing; 
 wherein the first and the second shielding shells are configured to surround the first terminals. 
 
   
   
     13. The receptacle as claimed in  claim 12 , wherein the middle of the first base of the receptacle housing protrudes upward into the first recess to form a rib extending longwise. 
   
   
     14. The receptacle as claimed in  claim 13 , wherein two opposite sides of the rib define a plurality of perforations communicating with the respective first cavities and the first recess for receiving the first terminals. 
   
   
     15. The receptacle as claimed in  claim 12 , wherein the second sidewall defines a plurality of apertures extending therethrough and communicating with the respective first cavities for securing the first terminals. 
   
   
     16. The receptacle as claimed in  claim 12 , wherein the bottom of the base plate extends downward to form two fixing sections located near the first soldering section respectively, and the supporting portions each defines a first hole communicating with the channel for receiving the corresponding fixing section. 
   
   
     17. The receptacle as claimed in  claim 12 , wherein the bottom of the connecting section extends downward to form a flange, and the supporting portion defines a second hole communicating with the channel for receiving the flange.